Rapid detecting method for sodium cyclamate in baijiu

A detection method and cyclamate technology are applied in the field of rapid detection of cyclamate in liquor, which can solve the problems of high detection cost, long detection time, low detection accuracy, etc., so as to facilitate detection, improve specificity, reduce detection cost and The effect of operational difficulty

Inactive Publication Date: 2018-10-02
OPTOTRACE SUZHOU TECH
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Problems solved by technology

[0010] In order to overcome the defects of high detection cost, long detection time and low detection accuracy of the existing detection technology, the present invention combines surface-enhanced Raman spectroscopy technology and a portable Raman spectrometer, and utilizes the characteristics of cyclamate to provide a kind of cyclamate in liquor The rapid detection method has the advantages of simple operation, high sensitivity, fast detection speed and low detection cost.

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  • Rapid detecting method for sodium cyclamate in baijiu

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Embodiment Construction

[0029] A rapid detection method for cyclamate in liquor, specifically comprising the steps of:

[0030] a. Preparation of nano-gold sol: Take 0.01% chloroauric acid or silver nitrate aqueous solution in a round bottom flask, stir, heat to boiling, add 1% according to the ratio of chloroauric acid or silver nitrate solution: citric acid solution = 100:0.7 Sodium citrate solution, stirring and heating until the liquid changes to red or yellow-green, cooling at room temperature, the resulting nano-gold or nano-silver sol, stored at room temperature and away from light; centrifuge the nano-gold or nano-silver sol at 10,000 rpm , remove the supernatant, and the obtained lower layer is concentrated nano-gold or nano-silver sol, which is stored at room temperature and away from light;

[0031] b. Preparation of agglomerating agent: prepare a saturated solution of sodium chloride, and the gained is an agglomerating agent, stored at room temperature and protected from light;

[0032] ...

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Abstract

The invention provides a rapid detecting method for sodium cyclamate in baijiu, and particularly relates to the technical field of safety detection of food. The rapid detecting method comprises the steps of extracting sodium cyclamate in a sample a liquid-liquid extracting method; after mixing colloidal gold or colloidal silver with liquid to be detected, adding an agglomeration agent so that target molecules to be detected and colloidal gold or colloidal silver nano-particles can form 'hot spot', and generating a special Raman spectrum under the effect of laser with the aid of a peculiar electromagnetic enhancement effect of a nano material; and finally judging whether the sample contains the sodium cyclamate or not through a spectrogram obtained by analysis through a Raman spectrometer.Compared with a traditional method and another rapid detecting method, the rapid detecting method for the sodium cyclamate in the baijiu has the advantages that detection specificity, sensitivity anddetection speed of the sodium cyclamate in the baijiu are increased, the detection cost and operation difficulty are reduced, the method for detecting the sodium cyclamate in the baijiu is rapid and accurate, detection of a food safety detecting and supervising process is facilitated, and illegal adding behaviors can be cracked down effectively.

Description

technical field [0001] The invention belongs to the technical field of food safety detection, and in particular relates to a rapid detection method for cyclamate in liquor. Background technique [0002] Cyclamate, whose chemical name is sodium cyclamate, is a commonly used additive in food production. Cyclamate is a commonly used sweetener, and its sweetness is 30 to 40 times that of sucrose. [0003] "GB 2760-2014 National Food Safety Standard Food Additive Use Standard" stipulates the limit value of cyclamate, which is 0.65-1.6g / kg (calculated as cyclamic acid) in different foods. The above added range Does not include liquor. In liquor, cyclamate is a sweetener that is strictly prohibited from being added, but unscrupulous manufacturers add cyclamate in violation of regulations in order to improve the taste of liquor. [0004] Among the existing detection technologies, there are mainly: [0005] 1. Chromatographic detection technology has the advantages of accurate det...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 常化仿倪天瑞李鹏飞邹威李立强章祥马宁
Owner OPTOTRACE SUZHOU TECH
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